Gamma
Math operation gamma, performs the operation per pixel, using either the constant provided in 'value' or the corresponding pixel from the buffer on aux as operands. The result is the evaluation of the expression result = (input >= 0.0f ? powf (input, value) : -powf (-input, value))
Value
global value used if aux doesn't contain data
name: value
type: double
default: 1.00
minimum: -inf
maximum: +inf
ui-minimum: -1.00
ui-maximum: 1.00
ui-gamma: 1.00
ui-step-small: 0.00
ui-step-big: 0.10
ui-digits: 3
pads: aux input output
parent-class: GeglOperationPointComposer
categories: compositors math
This page is part of the online GEGL Documentation, GEGL is a data flow based image processing library/framework, made to fuel GIMPs high-bit depth non-destructive editing future.